throughout the investigation we will be looking at the van, the machine and the environment. we will determine what caused this. >> sky 7hd shows coast guard investigators on board the overseas rain bar. they interest vied the bar pilot who was at the helm at the time of the accident. he passed an alcohol test, the result of a drug test are still pending. investigators also looked at the crushed hole from inside the ship. >> we continue to run through the records and conduct technical analysis. we will look at the internals of the vessel to get a good internal analysis of the hull itself. >> the oil tanker was empty when it sideswiped the fenders. the bridge itself was not damaged. >> i guess the first thought that came to my mind when i heard about it was the word unbelievable. >> long-time san francisco maritime attorney is not a part of the investigation, but has represented dozens of captains and bar pilots following accidents. >> we want the course recorder. it is like a black box thing. it would show what the maneuvers of the vessel was. i want to look at the engine roo